!2398 优化：文件操作日志增加提示

src/Add-on/File/OperLogsModal.tsx

@@ -42,6 +42,9 @@ export class OperLogsModal extends React.Component<HistoryProp, {}>
                             onClick={() => { app.Editor.ModalManage.Destory(); }}
                         />
                     </div>
+                    <div style={{ padding: "0 10px", height: "35px", lineHeight: "35px", fontWeight: "bold", fontSize: "16px" }}>
+                        温馨提示：历史记录存在时效性，超过7日可能会被清理。
+                    </div>
                     <div
                         className={Classes.DIALOG_BODY}
                         style={{ width: 500, height: "100%", backgroundColor: "white", margin: 0, overflow: "auto", maxHeight: 400, minHeight: 200 }}